Behanllp Chartered Surveyors
Telephone: 01727 800075
Daylight and Sunlight Studies

Rights of Light & Daylight Studies

UK property developers are shying away from new projects until more clarity is brought to laws surrounding secretive 'rights to light' deals, exacerbating a shortage in prime London offices and potentially stunting economic growth.

Rights of Light, Daylight, Sunlight and Overshadowing impacts are caused by a reduction in light entering a building due to a neighbouring development. As you would expect, this area is extremely complicated and as such, actionable Rights of Light ‘injury’ or the refusal of planning permission on the grounds of daylight and sunlight being adversely affected is a highly technical and legally complex matter to the point where a project can be significantly delayed, or even prevented from implementation.

Behan Partnership ltd has extensive expertise and experience in advising on changes within natural light practice for both developers and neighbouring owners affected by developments. We also advise on the implementation of the BRE BR209 2nd Edition on daylight, sunlight and overshadowing practice and how to deal with a tree or hedge dispute under the BR209 2nd Edition and Anti-social Behaviour Act.

Whether you are located near a proposed development or you are a commercial developer planning a large project, Behan Partnership ltd ensures that clarity and a high quality advice is delivered at all times. 
There are a variety of professional services that we provide in relation to Rights of Light, Daylight, Sunlight and Overshadowing we do this by:



Mark Behan MRICS is a member of the RICS Working Group for Daylight and Sunlight and is one of the authors of the new Guidance Note. Should you wish to discuss any matters in relation to the above or the services that we provide then please contact who would be happy to assist.


RICS Guidance Note “Daylighting and Sunlighting”
Mark Behan is a member of the working group that produced this guidance note. This guidance note provides advice to surveyors who accept instructions to advise on daylight, sunlight and shadow calculations for developments. It explains the different types of assessment available, reporting procedures and the roles that the Chartered Surveyor will need to perform.